CN109141149A - A kind of tunnel excavation hydraulic pressure demolition construction method - Google Patents
A kind of tunnel excavation hydraulic pressure demolition construction method Download PDFInfo
- Publication number
- CN109141149A CN109141149A CN201811155435.8A CN201811155435A CN109141149A CN 109141149 A CN109141149 A CN 109141149A CN 201811155435 A CN201811155435 A CN 201811155435A CN 109141149 A CN109141149 A CN 109141149A
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- explosive
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- snubber
- hole
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
Abstract
The invention discloses a kind of tunnel excavation hydraulic pressure demolition construction methods, the following steps are included: (1) determines drilling depth according to Grades of Surrounding Rock, then snubber is bored in focal point of working, reliever is bored outward along snubber, in excavation face bottom brill bottom edge eye in excavation face, bore periphery hole on excavation face periphery；(2) it will be cleaned out in each jewel hole；(3) powder charge, water bag and stemming in each jewel hole；(4) detonator or primacord explosion are lighted.This method can generate " water wedge " effect in explosion time due to installing water bag additional, improve capacity usage ratio, be conducive to rock crusher, to reduce amount of consumption of drugs；Water after explosion in blasthole can reduce the time of explosion rear venting depositing dust with atomized dust settling；Improve disposable cutting depth.
Description
Technical field
The present invention relates to a kind of blasting construction method more particularly to tunnel excavation hydraulic pressure demolition construction methods.
Background technique
Currently, as infrastructure construction in china continues to increase, it is also more and more using the tunnel of blast working.And logical
It is usually excavated using drilling and blasting method in normal constructing tunnel, common blasting method is first to drill, and is reloaded into explosive, detonator, then
Blasthole is blocked, is finally detonated.And this method has the disadvantage that: (1) Dust Capacity is big after detonating, and causes construction operation environment poor.
(2) amount of consumption of drugs is big, cannot give full play to demolition effect.
Summary of the invention
The purpose of the present invention is to overcome the disadvantages of the prior art, provides logical after one kind reduces amount of consumption of drugs, reduces explosion
The time of wind depositing dust and the tunnel excavation hydraulic pressure demolition construction method for improving disposable cutting depth.
A kind of tunnel excavation hydraulic pressure demolition construction method of the invention, comprising the following steps:
(1) drilling depth is determined according to Grades of Surrounding Rock, then snubber is bored in focal point of working, in excavation face along slotting
Eye bores reliever outward, bores bottom edge eye in excavation face bottom, bores periphery hole on excavation face periphery；
(2) it will be cleaned out in each jewel hole, remove aggregate chips, water and other all dirts；
(3) blasting charge and water bag in each jewel hole, the specific steps are；
Weak for IV grades, V grades of country rock snubber, reliever and bottom edge eye sequence of loading are as follows: from each hole eye bottom to
A water-saving bag, explosive, two water-saving bags and stemming are successively loaded in top, wherein the explosive continuously loads, the explosive
Detonator lead to outside borehole；
Weak for IV grades, V grades of country rock periphery hole sequence of loading are as follows: successively loaded from bottom to top are as follows: a water-saving bag,
Explosive, two water-saving bags and stemming, wherein the explosive section gap filling, the primacord of the explosive lead to borehole
Outside；
For IV grades strong, the snubber of III level country rock, reliever and bottom edge eye sequence of loading are as follows: from bottom to top according to
Secondary filling explosive, two water-saving bags and stemming, wherein the explosive continuously loads, the detonator of the explosive leads to borehole
Outside；
For IV grades of strong, III level country rock periphery hole sequence of loading are as follows: successively load explosive, two sections from bottom to top
Water bag and stemming, wherein the explosive section gap filling, the primacord of the explosive are led to outside borehole；
(4) detonator or primacord explosion are lighted.
This method has the advantage that compared with than conventional tunnel blast working
(1) " water wedge " effect can be generated in explosion time due to installing water bag additional, improves capacity usage ratio, it is broken to be conducive to country rock
It is broken, to reduce amount of consumption of drugs.
(2) water after explosion in blasthole can reduce the time of explosion rear venting depositing dust with atomized dust settling.
(3) disposable cutting depth is improved.
Detailed description of the invention
Fig. 1 be using tunnel excavation hydraulic pressure demolition construction method of the invention IV grade is weak, snubber of V grades of country rocks, auxiliary
Help eye, bottom edge eye powder charge layout drawing；
Fig. 2 be using tunnel excavation hydraulic pressure demolition construction method of the invention IV grade by force, the snubber of III level country rock,
Reliever, bottom edge eye powder charge layout drawing；
Fig. 3 be using tunnel excavation hydraulic pressure demolition construction method of the invention IV grade is weak, periphery hole powder charge of V grades of country rocks
Layout drawing；
Fig. 4 be using tunnel excavation hydraulic pressure demolition construction method of the invention IV grade is strong, periphery hole of III level country rock fills
Medicine layout drawing；
Fig. 5 is the Tunnel Blasting borehole position view using tunnel excavation hydraulic pressure demolition construction method of the invention.
Specific embodiment
In order to be more clear technical solution of the present invention, present invention will be described in further detail below with reference to the accompanying drawings.
A specific embodiment of the invention is as follows.
A kind of tunnel excavation hydraulic pressure demolition construction method of the invention as shown in drawings, comprising the following steps:
(1) drilling depth is determined according to Grades of Surrounding Rock, then snubber A is bored in focal point of working, in excavation face along drawing
Slotted eyes bores reliever B outward, bores bottom edge eye C in excavation face bottom, bores periphery hole D on excavation face periphery；
(2) it will be cleaned out in each jewel hole, remove aggregate chips, water and other all dirts；
(3) blasting charge and water bag in each jewel hole, the specific steps are；
Weak for IV grades, V grades of country rock snubber, reliever and bottom edge eye sequence of loading are as follows: from each hole eye bottom to
A water-saving bag 1, explosive 2, two water-saving bags 1 and stemming 3 are successively loaded in top, wherein the explosive 2 continuously loads, it is described
The detonator 4 of explosive is led to outside borehole；
Weak for IV grades, V grades of country rock periphery hole sequence of loading are as follows: successively loaded from bottom to top are as follows: a water-saving bag
1, explosive 2, two water-saving bags 1 and stemming 3, wherein 2 section gap of the explosive filling, the primacord 5 of the explosive draw
To outside borehole；
For IV grades strong, the snubber of III level country rock, reliever and bottom edge eye sequence of loading are as follows: from bottom to top according to
Secondary filling explosive 2, two water-saving bags 1 and stemming 3, wherein the explosive 2 continuously loads, the detonator 4 of the explosive draws
To outside borehole；
For IV grades of strong, III level country rock periphery hole sequence of loading are as follows: successively load explosive 2, two sections from bottom to top
Water bag 1 and stemming 3, wherein 2 section gap of the explosive filling, the primacord 5 of the explosive are led to outside borehole；
(4) 5 explosion of detonator 4 or primacord is lighted.
The advantages of loading explosive using section gap in the present invention is to save explosive and primacord dosage, continuously loads explosive
The advantages of be that explosive effect is good.
The more dust-laying effects of water consumption are better in the water bag used in this method, but demolition effect is bad, and increase
Drilling depth.The diameter of preferred water bag is identical as aperture, and the length of water bag is 20cm-25cm, both can guarantee drop in this way
Dirt effect can ensure that demolition effect again.
The packaging material of the water bag used in this method can be PVC plastic bag.
The production of KPS-60 water bag sealing machine can be used in water bag in this method, by being transported in hole outside hole.
The stemming in this method can use PNJ-160 type stemming mechanism using water, the mixed material of sand and soil
Make stemming.Stemming blocks aperture.
Explosive payload, hole depth, aperture and the spacing of interval filling in each hole can be according to " shotfiring safety regulations "
(GB6722-2011), " highway tunnel construction technical specification " (JTG-F60-2009) and field test determine.
Fender graded method may refer to " Design of Railway Tunnel specification " (TB10003-2005), " vcehicular tunnel design rule
Model " (JTG_D70-2004).
Tunnel Blasting borehole layout drawing may refer to " highway tunnel construction technical specification " (JTG-F60-2009).
The above content is to the further description done of the present invention, and it cannot be said that a specific embodiment of the invention only
It is limited to this, for those of ordinary skill in the art to which the present invention belongs, without departing from the inventive concept of the premise, also
Several simple deduction or replace can be made.
Claims (2)
1. a kind of tunnel excavation hydraulic pressure demolition construction method, it is characterised in that the following steps are included:
(1) drilling depth is determined according to Grades of Surrounding Rock, then focal point of working bore snubber, excavation face along snubber to
Outer brill reliever bores bottom edge eye in excavation face bottom, bores periphery hole on excavation face periphery；
(2) it will be cleaned out in each jewel hole；
(3) blasting charge and water bag in each jewel hole, the specific steps are；
Weak for IV grades, V grades of country rock snubber, reliever and bottom edge eye sequence of loading are as follows: from each hole eye bottom to top
A water-saving bag, explosive, two water-saving bags and stemming are successively loaded, wherein the explosive continuously loads, the explosive is led
Booster is led to outside borehole；
Weak for IV grades, V grades of country rock periphery hole sequence of loading are as follows: successively loaded from bottom to top an are as follows: water-saving bag, fried
Medicine, two water-saving bags and stemming, wherein the explosive section gap filling, the primacord of the explosive are led to outside borehole；
For IV grades strong, the snubber of III level country rock, reliever and bottom edge eye sequence of loading are as follows: successively filled from bottom to top
Explosive, two water-saving bags and stemming are filled out, wherein the explosive continuously loads, the detonator of the explosive is led to outside borehole；
For IV grades of strong, III level country rock periphery hole sequence of loading are as follows: successively load explosive, two water-saving bags from bottom to top
And stemming, wherein the explosive section gap filling, the primacord of the explosive are led to outside borehole；
(4) detonator or primacord explosion are lighted.
2. tunnel excavation hydraulic pressure demolition construction method according to claim 1, it is characterised in that: the diameter of the water bag
It is identical as aperture, and the length of water bag is 20cm-25cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155435.8A CN109141149A (en) | 2018-09-30 | 2018-09-30 | A kind of tunnel excavation hydraulic pressure demolition construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811155435.8A CN109141149A (en) | 2018-09-30 | 2018-09-30 | A kind of tunnel excavation hydraulic pressure demolition construction method |
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| CN109141149A true CN109141149A (en) | 2019-01-04 |
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| CN201811155435.8A Pending CN109141149A (en) | 2018-09-30 | 2018-09-30 | A kind of tunnel excavation hydraulic pressure demolition construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700843A (en) * | 2019-11-20 | 2020-01-17 | 中铁二十局集团有限公司 | Tunnel three-step synchronous excavation construction method based on partition blasting |
| CN111397458A (en) * | 2020-05-28 | 2020-07-10 | 中铁七局集团有限公司 | Hydraulic smooth blasting construction method suitable for granite geology III-level surrounding rock |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
| CN112943262A (en) * | 2021-01-27 | 2021-06-11 | 中铁七局集团武汉工程有限公司 | Karst landform tunnel energy-gathering water pressure smooth blasting structure and method |
| CN113758389A (en) * | 2021-09-22 | 2021-12-07 | 中交路桥华南工程有限公司 | Blast hole charging structure for energy-gathered water pressure blasting |
| CN113916077A (en) * | 2021-11-15 | 2022-01-11 | 华东交通大学 | Tunnel blasting explosive/water bag/stemming integrated automatic filling device |
| WO2023005344A1 (en) * | 2021-07-26 | 2023-02-02 | 中钢集团马鞍山矿山研究总院股份有限公司 | Underground tunneling blasting advanced protection wall dust suppression method |
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| WO1987003360A1 (en) * | 1985-11-22 | 1987-06-04 | Hokushin Kensetsu Kabushiki Kaisha | Blasting method and blasting bag |
| CN102980452A (en) * | 2012-11-23 | 2013-03-20 | 武汉大学 | De-noising and dust removal blast hole stemming method for drilling blasting of earth and stone in urban and rural areas |
| CN104406472A (en) * | 2014-10-27 | 2015-03-11 | 武汉工程大学 | Blast hole plugging method for blasting engineering |
| CN205156773U (en) * | 2015-12-01 | 2016-04-13 | 中铁二十局集团有限公司 | Rock stratum water pressure drilling -and -blasting construction structures for smooth blasting slowly inclines |
| CN106197179A (en) * | 2016-09-14 | 2016-12-07 | 中国地质大学（武汉） | A kind of demolition blasting multiple-row blasting structure and blasthole blocking up method |
| CN207066255U (en) * | 2017-07-07 | 2018-03-02 | 山东唐口煤业有限公司 | A kind of coal seam Deephole pre-splitting blasting charge constitution |
| CN207423009U (en) * | 2017-09-28 | 2018-05-29 | 广东省长大公路工程有限公司 | A kind of tunnel hydraulic pressure demolition constructing structure |
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2018
- 2018-09-30 CN CN201811155435.8A patent/CN109141149A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1987003360A1 (en) * | 1985-11-22 | 1987-06-04 | Hokushin Kensetsu Kabushiki Kaisha | Blasting method and blasting bag |
| CN102980452A (en) * | 2012-11-23 | 2013-03-20 | 武汉大学 | De-noising and dust removal blast hole stemming method for drilling blasting of earth and stone in urban and rural areas |
| CN104406472A (en) * | 2014-10-27 | 2015-03-11 | 武汉工程大学 | Blast hole plugging method for blasting engineering |
| CN205156773U (en) * | 2015-12-01 | 2016-04-13 | 中铁二十局集团有限公司 | Rock stratum water pressure drilling -and -blasting construction structures for smooth blasting slowly inclines |
| CN106197179A (en) * | 2016-09-14 | 2016-12-07 | 中国地质大学（武汉） | A kind of demolition blasting multiple-row blasting structure and blasthole blocking up method |
| CN207066255U (en) * | 2017-07-07 | 2018-03-02 | 山东唐口煤业有限公司 | A kind of coal seam Deephole pre-splitting blasting charge constitution |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110700843A (en) * | 2019-11-20 | 2020-01-17 | 中铁二十局集团有限公司 | Tunnel three-step synchronous excavation construction method based on partition blasting |
| CN111397458A (en) * | 2020-05-28 | 2020-07-10 | 中铁七局集团有限公司 | Hydraulic smooth blasting construction method suitable for granite geology III-level surrounding rock |
| CN111397458B (en) * | 2020-05-28 | 2022-08-05 | 中铁七局集团有限公司 | Hydraulic smooth blasting construction method suitable for granite geology III-level surrounding rock |
| CN112943262A (en) * | 2021-01-27 | 2021-06-11 | 中铁七局集团武汉工程有限公司 | Karst landform tunnel energy-gathering water pressure smooth blasting structure and method |
| CN112880499A (en) * | 2021-02-01 | 2021-06-01 | 中交路桥北方工程有限公司 | Smooth blasting method for tunnel weak surrounding rock |
| WO2023005344A1 (en) * | 2021-07-26 | 2023-02-02 | 中钢集团马鞍山矿山研究总院股份有限公司 | Underground tunneling blasting advanced protection wall dust suppression method |
| CN113758389A (en) * | 2021-09-22 | 2021-12-07 | 中交路桥华南工程有限公司 | Blast hole charging structure for energy-gathered water pressure blasting |
| CN113758389B (en) * | 2021-09-22 | 2023-08-18 | 中交路桥华南工程有限公司 | Hole charging structure for energy-gathering hydraulic blasting |
| CN113916077A (en) * | 2021-11-15 | 2022-01-11 | 华东交通大学 | Tunnel blasting explosive/water bag/stemming integrated automatic filling device |
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